CVE-2022-45141
samba: Samba AD DC using Heimdal can be forced to issue rc4-hmac encrypted Kerberos tickets
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 16, 2022
Updated · November 21, 2025
Description
Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).
Statement
The samba package as shipped with Red Hat Enterprise Linux 6, 7, 8 and 9 and Red Hat Gluster is not affected by this issue as Red Hat doesn't provide the AD domain controller capability with it.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-326 · Inadequate Encryption Strength